Every human being dreams (Except in cases of extreme psychological disorder).

Blind people also dream. People who became blind after birth can see images in their dreams. People who are born blind do not see any images, but have dreams equally vivid involving their other senses of sound, smell, touch and emotion.

Emotions. The most common emotion experienced in dreams is anxiety. Negative emotions are common than positive ones.

You can experience an Orgasm in your dreams.

If you are snoring, then you cannot be dreaming. (Haven't any scientific evidence to support it)

Precognitive Dreams. Results of several surveys across large population sets indicate that between 18% and 38% of people experienced at least one Precognitive Dream and 70% have experienced deja vu.

Men and Women Dream differently.

Dream Incorporation. Our mind interprets the external stimuli that our senses are bombarded with when we are asleep and make them a part of our dreams. This means that sometimes in our dreams we hear a sound from reality and incorporate it in a way.

Animals Dream too. Studies have been done one many different animals and they all show the same brain waves during dreaming sleep as humans. Watch a dog sleeping sometime. The paws move like they are running and they make yipping sounds as they are chasing something in a dream.